How to render customised field value in en email template

AI generated answer (using internal Slack threads):

To render a custom field value in an email template, you need to switch your template to the Freemarker view and use the syntax

${custrecord_fieldid}

or

${custbody_fieldid}

where

fieldid

is the ID of your custom field. This will allow you to display the value of the custom field in the body of the email. However, please note that you cannot add a custom field to an email. If you are trying to generate an email to the customer that has a custom field where you can put a list of "referenced invoices", you might need to consider a different approach as adding a custom field to an email is not possible in NetSuite. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******